EP 4155195 A4 20240828 - SYSTEM, COMMUNICATION DEVICE, PROGRAM, AND CONTROL METHOD
Title (en)
SYSTEM, COMMUNICATION DEVICE, PROGRAM, AND CONTROL METHOD
Title (de)
SYSTEM, KOMMUNIKATIONSVORRICHTUNG, PROGRAMM UND STEUERUNGSVERFAHREN
Title (fr)
SYSTÈME, DISPOSITIF DE COMMUNICATION, PROGRAMME ET PROCÉDÉ DE COMMANDE
Publication
Application
Priority
- JP 2020087021 A 20200518
- JP 2021013151 W 20210326
Abstract (en)
[origin: EP4155195A1] Provided is a system including: a first flying object and a second flying object each configured to be capable of establishing a wireless communication link with a ground communication device arranged on ground, in which, when replacing the first flying object which has established a wireless communication link with the ground communication device using a first circularly polarized wave with the second flying object, the first flying object cuts the wireless communication link with the ground communication device after the second flying object has established a wireless communication link with the ground communication device using a second circularly polarized wave opposite to the first circularly polarized wave. Provided is a communication device mounted on a flying object, including: a wireless communication unit configured to wirelessly communicate with a ground communication device arranged on ground; and a communication control unit configured to cause the wireless communication unit to make a switch between double-polarized communication which uses a right-handed circularly polarized wave and a left-handed circularly polarized wave and single-polarized communication which uses the right-handed circularly polarized wave or the left-handed circularly polarized wave, according to a predetermined condition.
IPC 8 full level
H04B 7/10 (2017.01); B64C 13/20 (2006.01); B64C 19/02 (2006.01); B64F 1/36 (2024.01); H04B 7/185 (2006.01)
CPC (source: EP)
H04B 7/10 (2013.01); H04B 7/18504 (2013.01); B64U 10/25 (2023.01); B64U 50/31 (2023.01); B64U 2101/21 (2023.01); B64U 2101/23 (2023.01); Y02D 30/70 (2020.08)
Citation (search report)
- [X] EP 1129529 B1 20070110 - QUALCOMM INC [US]
- [A] ARUM STEVE CHUKWUEBUKA ET AL: "A review of wireless communication using high-altitude platforms for extended coverage and capacity", COMPUTER COMMUNICATIONS., vol. 157, 1 May 2020 (2020-05-01), NL, pages 232 - 256, XP093029294, ISSN: 0140-3664, DOI: 10.1016/j.comcom.2020.04.020
- [A] KODHELI O ET AL: "Satellite Communications in the New Space Era: A Survey and Future Challenges", ARXIV.ORG, CORNELL UNIVERSITY LIBRARY, 201 OLIN LIBRARY CORNELL UNIVERSITY ITHACA, NY 14853, 20 February 2020 (2020-02-20), XP081613163
- See also references of WO 2021235096A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4155195 A1 20230329; EP 4155195 A4 20240828; JP 2021182684 A 20211125; JP 7165697 B2 20221104; WO 2021235096 A1 20211125
DOCDB simple family (application)
EP 21809167 A 20210326; JP 2020087021 A 20200518; JP 2021013151 W 20210326